Supply vs demand. Less demand will result in lower rents. Lower rents will result in lower pricing for their substitute, which is entry level purchases. Lower entry level prices will result in lower prices for the move up properties. The footbone is connected to the kneebone, the kneebone is connected to the thigh bone.......
If there are 20M illegals in the country that amounts to a sizable percentage of the population as a whole and an even higher percentage of the rental tenants. So yes, sending a bunch of them back to their point of origin has the distinct potential of effecting the rental market for apartments, the rental market for the corporate investors in the SFR market and the overall pricing structure on the low end in the SFR markets.
All the action is at the margins. So when Bubba says we need to let them in he can GFY.